<?php

if (! defined('BASEPATH'))
    exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package CodeIgniter
 * @author ExpressionEngine Dev Team
 * @copyright Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license http://codeigniter.com/user_guide/license.html
 * @link http://codeigniter.com
 * @since Version 1.0
 * @filesource
 *
 */
    
// ------------------------------------------------------------------------

/**
 * CodeIgniter Path Helpers
 *
 * @package CodeIgniter
 * @subpackage Helpers
 * @category Helpers
 * @author ExpressionEngine Dev Team
 * @link http://codeigniter.com/user_guide/helpers/xml_helper.html
 */
    
// ------------------------------------------------------------------------

/**
 * Set Realpath
 *
 * @access public
 * @param
 *            string
 * @param
 *            bool checks to see if the path exists
 * @return string
 */
if (! function_exists('set_realpath')) {

    function set_realpath ($path, $check_existance = FALSE)
    {
        // Security check to make sure the path is NOT a URL. No remote file
        // inclusion!
        if (preg_match(
                "#^(http:\/\/|https:\/\/|www\.|ftp|[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3})#i", 
                $path)) {
            show_error(
                    'The path you submitted must be a local server path, not a URL');
        }
        
        // Resolve the path
        if (function_exists('realpath') and @realpath($path) !== FALSE) {
            $path = realpath($path) . '/';
        }
        
        // Add a trailing slash
        $path = preg_replace("#([^/])/*$#", "\\1/", $path);
        
        // Make sure the path exists
        if ($check_existance == TRUE) {
            if (! is_dir($path)) {
                show_error('Not a valid path: ' . $path);
            }
        }
        
        return $path;
    }
}


/* End of file path_helper.php */
/* Location: ./system/helpers/path_helper.php */